Midterm 2 SP2023
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School
San Jose State University *
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Course
60
Subject
English
Date
Apr 3, 2024
Type
docx
Pages
4
Uploaded by LieutenantStar10747
San José State University
Department of Aviation &Technology
Tech 60, Electronic Circuits, Section 1, Spring 2023
Midterm 2
Student Name: __
Date: ____
Instruction: Please read each problem carefully before answering. Please show your work in details on each page by first including the general equation then substituting numerical values and finally obtaining the answer. Place your final answers for each part in the boxes shown at the end of each problem. Point deductions would apply for not following these instructions. You are allowed to use formula sheets and calculator but no online resources. There are four problems,
each problem has 25 points for a total of 100 points.
1.
In the Wheatstone Bridge shown, R
1
= 5 kΩ, R
2
= 10 kΩ, R
3
= 1 kΩ.
a.
If the bridge is to be balanced, determine the value of R
4
.
b.
Given the input voltage of 20 V and given the condition in part (a) when the bridge is balanced, determine the value of the output voltage, V
OUT.
2.
In the circuit shown, V
s
= 4 V, R
1
= 400 Ω, R
2
= 2 kΩ, R
3
= 8 kΩ determine:
a.
Total resistance, R
T
.
b.
Total current, I
T
.
c.
Current through R
2
.
d.
Power dissipated in R3.
3.
In the circuit shown, V
s1
= 30 V, V
s2
= 36 V, and R
1
= R
3
= 2 kΩ R
2
= 8 kΩ. Use the Superposition Theorem to:
a.
Determine the current I
2,S1
in R
2
due to V
S1 only.
b.
Determine the current I
2,S2 in R
2
due to V
S2 only.
c.
Use the results of parts “a” and “b” to find the current in R
2
in the original circuit.
d.
Using the result of part “c”, determine the voltage across R
2
in the original circuit.
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4.
In the circuit shown, V
s
= 10 V, R
1
= 7 kΩ, R
2
=3 kΩ. R
3
= 900 Ω. Remove the load resistance and use the Thevenin’s Equivalent Circuit to determining: a.
Thevenin’s Equivalent Resistance, R
TH
.
b.
Thevenin’s Equivalent Voltage Source, V
TH
.
c.
Determine the value of R
L
for maximum power transfer to the load.
d.
Return R
L
obtained in part “c” to the Thevenin’s Equivalent Circuit and find I
L
.